Whats under the hood?

[ri06667]

Ive messaged the guy who posted the video with no reply. I was just wondering if anyone would have rough estimations on what this guy is running to acheive this 800+ rwhp.. Maybe a turbo'd 351?
http://www.youtube.com/watch?v=E693N0XPNx4

[Jesshwarren]

I would say a turbocharged 351 but ya never know. Sweet running truck.